Low-lying levels and collective bands in doubly-odd Cs-124

摘要

The nucleus Cs-124 has been studied by in-beam gamma- and e(-)-spectroscopy techniques with the fusion-evaporation reaction In-115(C-12,3n gamma) at 57 MeV. Multipolarities of the main low-energy transitions have been deduced from electron spectra. A level scheme is proposed with firm I-pi assignments. Low-spin low-lying levels and high-spin states have been investigated. The low-spin levels and two-quasiparticle bands are interpreted by using the interacting boson-fermion-fermion model. The band structures are also discussed in the frame of the cranked-shell model. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 59]